Does anyone know the y-intercept? cause apparently it's not (0,-2)

Three times the sum of a number and seven is negative thirty-six. what is the number?

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212

If f(x)=-3x+2 and g(x)=-7x-2, which point represents f(x)=g(x)?